WriteLokiImage

Add new defs to run command neccesary to flash the patched boot.img (boot.lok) wih loki_patch
for jflteatt/vzw due to secure boot.

Requires TARGET_USES_LOKI := true in BoardConfig

Change-Id: I5be37951450ec327ccf29935306aac7c46a215d2
Signed-off-by: Brandon McAnsh <brandon.mcansh@gmail.com>

Conflicts:

	core/Makefile
	tools/releasetools/ota_from_target_files